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Route · STS → LAX · 2020–2025 BTS data

Santa Rosa to Los Angeles

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), STS to LAX (Santa Rosa to Los Angeles) ranks #3132 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.8%
On-time
+4.8 pts
vs US avg
65 min
Delay when late
3,457
Flights
#3132 of 4927
Corpus placement

Cancelled

1.5%

Best Month

Aug 2024 92%

Worst Month

Dec 2024 68%

Distance

400 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 38 7 9 0 OO
Nov 2025 50 7 5 0 OO
Oct 2025 51 7 0 0 OO
Sep 2025 77 16 0 0 OO
Aug 2025 69 11 0 0 OO
Jul 2025 61 16 0 0 OO
Jun 2025 60 11 0 0 OO
May 2025 62 11 0 0 OO
Apr 2025 72 13 0 0 OO
Mar 2025 62 13 0 0 OO
Feb 2025 44 12 3 0 OO
Jan 2025 55 15 1 0 OO
Dec 2024 82 26 2 0 OO
Nov 2024 79 25 0 0 OO
Oct 2024 57 8 0 0 OO
Sep 2024 56 6 0 0 OO
Aug 2024 60 5 0 0 OO
Jul 2024 62 12 0 0 OO
Jun 2024 58 10 0 0 OO
May 2024 30 1 0 0 OO
Mar 2024 42 8 0 0 OO
Jan 2024 38 9 0 0 OO
Dec 2023 58 6 1 0 OO
Nov 2023 39 7 0 0 OO

STS–LAX seasonal on-time pattern

Best: April (87.7%) · weakest: December (76.8%)

75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 76.8%

Strongest calendar month

April

87.7% on-time · ~55 flights/mo

Busiest calendar month

September

~60 flights/mo avg

Weakest calendar month

December

76.8% on-time · ~58 flights/mo

Cancellation Rate

1.5%

21 of 1,362 flights

Diversion Rate

0.0%

0 of 1,362 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

STS - Santa Rosa

Full on-time, delay-cause, and seasonal performance for Santa Rosa, CA.

STS on-time profile

LAX - Los Angeles

Full on-time, delay-cause, and seasonal performance for Los Angeles, CA.

LAX on-time profile

Compare the two airports

See STS and LAX side by side on delays, cancellations, and reliability.

Compare STS vs LAX

Origin-hub reliability standing

Mid-pack among STS departures

From STS, this corridor sits with 7 other 75–85% on-time routes out of 8 tracked departures, not the hub's reliability leaders (1 at ≥85%) and not the softest ( 0 below 75%). Destination: Los Angeles · fleet on-time rank #1676 of 4927.

What the Data Says About STS to LAX

Bureau of Transportation Statistics records show Santa Rosa to Los Angeles (STS to LAX) running a 83.8% on-time rate over 3,457 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 64.8 minutes. The 400-mile corridor is served by 3 carriers, and over the last 24 months 1.5% of 1,362 flights were cancelled, 0.0% diverted.

The monthly split is wide on this route: Aug 2024 posted the strongest performance at 92% on-time, while Dec 2024 came in at just 68% - a 23-point swing worth factoring into travel timing.

On the multi-year calendar, STS–LAX peaks in April at 87.7% on-time while September carries the heaviest traffic (~60 flights per month) ; the softest month is December at 76.8%, a 10.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does STS to LAX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, STS to LAX ranks #3132 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from STS to LAX? ▼
Flights from Santa Rosa to Los Angeles have a 83.8% on-time rate based on 3,457 flights. The average delay is 64.8 minutes. The best recent month was Aug 2024 with 92% on-time.
What is the cancellation rate for STS to LAX? ▼
Over the last 24 months, 1.5% of flights on this route were cancelled (21 of 1,362 flights) and 0.0% were diverted.
How far is the flight from STS to LAX? ▼
The flight distance from Santa Rosa (STS) to Los Angeles (LAX) is approximately 400 miles. This route is served by 3 carriers.
When is the best time to fly from STS to LAX? ▼
The best recent month for on-time performance was Aug 2024 (92% on-time). The worst was Dec 2024 (68% on-time). Consider booking during months with historically better performance.

Airports on this route

STS Airport

Santa Rosa
LAX Airport

Los Angeles
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using STS–LAX data

STS–LAX runs 4.8 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare STS and LAX airport profiles: delay causes and top routes differ even on the same corridor. STS airport
  • If your dates flex, April (87.7% on-time) beats December (76.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.8% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.